<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>添加用户信息</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            background-color: #f0f0f0;
        }

        h3 {
            color: #007acc;
            text-align: center;
        }

        hr {
            border: none;
            border-top: 1px solid #3399ff;
        }

        form {
            width: 400px;
            margin: 0 auto;
            background-color: white;
            padding: 20px;
            border-radius: 5px;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
        }

        fieldset {
            border: none;
        }

        legend {
            font-size: 18px;
            color: #007acc;
            padding-bottom: 10px;
        }

        table {
            width: 100%;
        }

        td {
            padding: 10px 0;
        }

        label {
            font-weight: bold;
            color: #555;
        }

        input[type="text"] {
            width: 100%;
            padding: 8px;
            border: 1px solid #ccc;
            border-radius: 3px;
        }

        input[type="submit"] {
            background-color: #007acc;
            color: white;
            border: none;
            padding: 10px 20px;
            border-radius: 3px;
            cursor: pointer;
            transition: background-color 0.3s ease;
        }

        input[type="submit"]:hover {
            background-color: #005f99;
        }
    </style>
</head>

<body>
    <h3>添加用户</h3>

    <hr />
    <form method="post">
        <fieldset>
            <legend>添加数据</legend>
            <table>
                <tr>
                    <td><label>用户</label></td>
                    <td><input type="text" name="username" /></td>

                </tr>
                <tr>
                    <td><label>别称</label></td>
                    <td><input type="text" name="nikename" /></td>
                </tr>
                <tr>
                    <td><label>密码</label></td>
                    <td><input type="text" name="password" /></td>
                </tr>
            </table>
            <input type="submit" />
        </fieldset>
    </form>
</body>
</html>